3/31/2024 0 Comments Scan master boot record for virusIf this signature is not present or is corrupted, the computer may display an error message and refuse to boot. The only absolute criteria for a boot sector is that it must contain 0x55 and 0xAA as its last two bytes. However, they are not designed to infect removable media. Today, there are programs known as ‘bootkits’ that write their code to the MBR as a means of loading early in the boot process and then concealing the actions of malware running under Windows. For this reason, they started to fade from the scene after the appearance of Windows 95 (which made little use of DOS instructions). While boot sector viruses infect at a BIOS level, they use DOS commands to spread to other floppy disks. The infected code runs when the system is booted from an infected disk, but once loaded it will infect other floppy disks when accessed in the infected computer. ![]() A boot sector virus is a type of virus that infects the boot sector of floppy disks or the Master Boot Record (MBR) of hard disks (some infect the boot sector of the hard disk instead of the MBR).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |